In the heat -- if we can call it that -- of summer, you'd think every melon you get your hands on would taste sweet, ripe and delicious, right? Wrong. I don't know about you, but for the life of me, I can't seem to crack the code on choosing melons. I've been burnt a zillion times, having spent real money expecting a thrill, and inevitably getting something tasteless and under-ripe or mushy and over-ripe. During melon season, no less. Then, this weekend, while shopping at Shoreline Central Market, I ignored the watermelon samples over at the "Taste me!" kiosk and let my nose lead me to nirvana: a perfumed pile of Galia melons: